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All results from a given calculation for NCO (isocyanato radical)

using model chemistry: MP4=FULL/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C*V 2Π
Energy calculated at MP4=FULL/3-21G
 hartrees
Energy at 0K-166.494428
Energy at 298.15K-166.494400
HF Energy-166.180767
Nuclear repulsion energy51.385867
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at MP4=FULL/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σ 1692 1656        
2 Σ 1413 1383        
3 Π 596 583        
3 Π 567 555        

Unscaled Zero Point Vibrational Energy (zpe) 2133.8 cm-1
Scaled (by 0.9788) Zero Point Vibrational Energy (zpe) 2088.6 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at MP4=FULL/3-21G
B
0.38113

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/3-21G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.281
C2 0.000 0.000 -0.041
O3 0.000 0.000 1.152

Atom - Atom Distances (Å)
  N1 C2 O3
N11.23992.4331
C21.23991.1932
O32.43311.1932

picture of isocyanato radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 O3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability